First of all, she didn't disappear after the Alabama game, she pitched (and won) games against Murray State March 19th and Tennessee State on April 2nd. She had to leave the TSU game early because the injury began to bother her more. The decision was made to shut her down after that.
Second, I completely disagree with you that the fans have a "right" to know about an injury. What gives you that right? If a player is injured or sick or otherwise, that's not any fan's business. The only thing you have a "right" to know about the team is who is playing and what happened in the game. These are real people, not pieces of meat that exist only for your entertainment.
To answer another question in the thread, she is not eligible for a redshirt because she participated in games past the halfway point of the season. To be eligible for a medical redshirt, it's 30% of games, but those games must be confined to the first 30% of the season.